Finding the Fourth Proportional to 398,068.14, 549,309.15 and 219,220.14
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Solution
The fourth proportional to 398,068.14, 549,309.15 and 219,220.14 is: 302,510.09
Step by Step Solution
- Step 1: Write the proportion equation
398,068.14 : 549,309.15 = 219,220.14 : x - Step 2: Convert to fraction form
398,068.14/549,309.15 = 219,220.14/x - Step 3: Cross multiply
398,068.14x = 549,309.15 × 219,220.14 - Step 4: Simplify right side
398,068.14x = 120,419,628,766.28 - Step 5: Solve for x
x = 120,419,628,766.28/398,068.14 - Step 6: Final answer
x = 302,510.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.